First of all, you need to stop thinking about the scores. They bob up and down according to some current no one has been able to figure out. I've gone from 100 to 93 in twelve hours on occasion. Today my score is down even though my traffic is up. So consider it some bizarre sideshow and ignore it.
As far is improving traffic, the best way is to read and comment on other writers' hubs and start a connection. That way, as more and more people on the site read your work, it gets a higher internet rating and will show up on searches. Plus word of mouth is by far the best way to get that attention.
Good luck. Lynda